CN2445496Y - Spare power supply switching device - Google Patents

Spare power supply switching device Download PDF

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Publication number
CN2445496Y
CN2445496Y CN 99249166 CN99249166U CN2445496Y CN 2445496 Y CN2445496 Y CN 2445496Y CN 99249166 CN99249166 CN 99249166 CN 99249166 U CN99249166 U CN 99249166U CN 2445496 Y CN2445496 Y CN 2445496Y
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CN
China
Prior art keywords
power supply
contactor
switch
utility
model
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Expired - Fee Related
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CN 99249166
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Chinese (zh)
Inventor
徐卫河
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Individual
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Individual
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Priority to CN 99249166 priority Critical patent/CN2445496Y/en
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Publication of CN2445496Y publication Critical patent/CN2445496Y/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a spare power supply switching device. When the electricity of an electric appliance can be supplied by multi-path power supply, the power supply which is actually switched on is selected automatically by the utility model. The utility model is characterized in that a main power supply (U1) and a spare power supply (U2) are respectively connected with knife switches of an AC contactor (KM1) and an AC contactor (KM2); both excitation coils of the main and the spare power supply are connected with a knife switch of an intermediate relay (Rz) which is connected in parallel to the A phase of the main power supply with a time relay (Rt); the output terminal of the spare power supply is connected with the A phase of a secondary line of the main power supply. A logic program is made by the self locking and interlocking of an electromagnetic switch set, achieving the purposes of unattended operation and accurate operation. The utility model has the advantages that the main power supply has priority, and instant integrated network can not appear in the process of switching. The electric elementary diagram can be seen in the accompanying drawing.

Description

The stand-by power supply switch
The utility model is a kind of stand-by power supply switch, belongs to the control device of low-voltage-powered system, and when electrical appliance had multiple power supplies to power, the actual power supply of connecting was selected automatically by this device.
Power supply switched the moving operation of armrest in the past, because of slow in one's movements, the power failure gap occurred; If being incorporated into the power networks also can appear in the operating sequence mistake.On line type UPS and this apparatus function consciousness are similar, but principle and applicable situation differ widely.
The purpose of this utility model provides a kind of stand-by power supply switch, accomplishes the response speed height, and main power source has priority, stops the phenomenon that is incorporated into the power networks, and realizes unattended operation.
The utility model is a kind of stand-by power supply switch, main power source U 1Primary line (U 1A), (U 1B), (U 1C) be connected on A.C. contactor (KM respectively 1) normal open switch (K 1A), (K 1B), (K 1C) locate stand-by power supply U 2Primary line (U 2A) be connected on A.C. contactor (KM 2) normal open switch (K 2A) locate, it is characterized in that: A.C. contactor (KM 1) normal open switch (K 1A) secondary terminals and A.C. contactor (KM 2) normal open switch (K 2A) the secondary terminals short circuit.A.C. contactor (KM 1) magnetizing coil (L 1) by auxiliary relay (R z) normal open switch (K 11) and the time relay (R t) normal open switch (K 22) be concatenated into (U 1A), A.C. contactor (KM 2) magnetizing coil (L 2) by the time relay (R t) normally closed switch (K 21) U that is concatenated into 2Primary line (U 2A), the time relay (R t) magnetizing coil (L t) and auxiliary relay (R z) magnetizing coil (L z), and be connected in main power source U 1Primary line (U 1A).
The utility model circuit only is made up of four electromagnetic switching devices, with being connected to self-locking or interlocking state between the relevant switch, works out out logical program.
According to this device of program that prelists can be independently, operation like clockwork, accomplish unattended operation.
For ease of explanation, with industrial electro (main power source U 1) and civilian electricity (stand-by power supply U 2) the duplex feeding system is example.Realize the isolation of two-way power supply primary line, secondary line parallel connection by the switch of two A.C. contactors.It is widely used, and expansion multichannel principle is similar.
The electrical schematic diagram of this example is seen accompanying drawing.Wherein:
KM 1-main power source A.C. contactor; , KM 2-stand-by power supply A.C. contactor;
R t-the time relay; R z-auxiliary relay.
U 1in-main power source input (U 1Primary line); U 1out-main power source output (U 1Secondary line);
U 2in-stand-by power supply input (U 2Primary line); U 2out-stand-by power supply output (U 2Secondary line).
For guaranteeing response speed, select contactor (DJ10 series of products) and the auxiliary relay (JZ7 series of products) of mechanical inertia time of delay ≯ 0.4s for use; For guaranteeing that transient state not occurring is incorporated into the power networks, the adjusting range ≯ 0.5s of the time relay (JS series of products).Illustrated below in conjunction with electrical schematic diagram.
(1) U 2During power failure, U 1Power supply separately
(1) industrial electro U 1A phase (U 1A) and be connected to the time relay (R t) and auxiliary relay (R z) magnetizing coil (L t), (L z) on.
1. pass through the mechanical inertia time 0.1s of electromagnetic switch, auxiliary relay (R z) normally closed switch (K 21) disconnected, normal open switch (K 22) close.
2. pass through (R again t) the time 0.2s that sets up, its normal open switch (K 11) closure.
(2) (K at this moment 21) open circuit, the magnetizing coil (L of stand-by power supply contactor 2) last no-voltage, (KM 2) surely not work its switch (K 2A) be in open-circuit condition, both made U 2Power supply can not exported yet.
(3) at this moment, (U 1A) by (K 11) and (K 22) the series connection connection, be added to main power source contactor (KM 1) magnetizing coil (L 1) on, pass through 0.1s again, because main power source U 1Primary line (U 1A), (U 1B), (U 1C) be connected on A.C. contactor (KM respectively 1) normal open switch (K 1A), (K 1B), (K 1C) the cutter end, as (KM 1) when closed, U 1By corresponding switch contact end output.
(2) U 1During power failure, U 2Power supply separately
(1) because of U 1Do not exist, so (R z) and (R t) do not work nature (K 21) remain closed.
(2) U 2Through (K 21) be added to (KM 2) magnetizing coil (L 2) on, through behind the 0.1s, because U 2Primary line (U 2A) be connected on A.C. contactor (KM 2) normal open switch (K 2A) locate, as (K 2A) when closed, U 2By its (K 2A) tip side output.
(3) U 1And U 2Power supply simultaneously
(1) U 1, U 2Insert simultaneously, because (K 21) the primary state closure, behind 0.1s, seemingly should be at first by (K 21) connection U 2
(2) still, meanwhile, (R z) also start, make (K 21) disconnect (K 2A) be disconnected U then 2Almost illogical disconnected again.
(3) at (K 21) when opening a way, (K 22) closed, after 0.2s, (R t) (K 11) closure, (U 1A) through (K 11) and (K 22) be added to (KM 1) (L 1) on, make its three groups often open, (K 1B), (K 1C) closed simultaneously, final U 1Output.
(4) U 2Duration of work, U 1Insert
(1) in case U 1Insert, at first (R z) startup make (K 21) open circuit, cut off (L 2) voltage, (KM 2) (K 2A) discharge, make U 2Interrupt.
(2) pass through 0.2s, (K again 11) closure, with (U 1A) be added to (L 1), (KM 1) three groups of normal open switch adhesives, become U 1Output.
(5) U 1Duration of work, U 2Insert
Because (U 1A) there is (K 21) will remain open circuit, U 2Desire insert can not, still be U 1Output.
From back three kinds of U 1And U 2And the state of depositing finds out, although (KM 1) switch (K 1A) and (KM 2) switch (K 2A) connect, form the output parallel connection of two-way power supply, however as long as (U 1A) exist or appearance, will make (R t) and (R z) work, guarantee U 2Be breaking at U 1Insert elder generation, never produce and be incorporated into the power networks.

Claims (2)

1. the utility model is a kind of stand-by power supply switch, main power source U 1Primary line (U 1A), (U 1B), (U 1C) be connected on A.C. contactor (KM respectively 1) normal open switch (K 1A), (K 1B), (K 1C) locate stand-by power supply U 2Primary line (U 2A) be connected on A.C. contactor (KM 2) normal open switch (K 2A) locate, it is characterized in that: A.C. contactor (KM 1) normal open switch (K 1A) secondary terminals and A.C. contactor (KM 2) normal open switch (K 2A) the secondary terminals short circuit.
2. stand-by power supply switch according to claim 1 is characterized in that: A.C. contactor (KM 1) magnetizing coil (L 1) by auxiliary relay (R 2) normal open switch (K 11) and the time relay (R t) normal open switch (K 22) be concatenated into (U 1A), A.C. contactor (KM 2) magnetizing coil (L 2) by the time relay (R t) normally closed switch (K 21) U that is concatenated into 2Primary line (U 2A), the time relay (R t) magnetizing coil (L t) and auxiliary relay (R z) magnetizing coil (L z), be connected in parallel on main power source U 1Primary line (U 1A).
CN 99249166 1999-11-02 1999-11-02 Spare power supply switching device Expired - Fee Related CN2445496Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99249166 CN2445496Y (en) 1999-11-02 1999-11-02 Spare power supply switching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99249166 CN2445496Y (en) 1999-11-02 1999-11-02 Spare power supply switching device

Publications (1)

Publication Number Publication Date
CN2445496Y true CN2445496Y (en) 2001-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99249166 Expired - Fee Related CN2445496Y (en) 1999-11-02 1999-11-02 Spare power supply switching device

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CN (1) CN2445496Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100358064C (en) * 2005-06-29 2007-12-26 天津市百利电气有限公司 Quick automatic change-over switch
CN100373744C (en) * 2003-03-24 2008-03-05 新昌机械设备株式会社 Unit resident normal/ emergency power supply switch board and its power supply automatic converting device
CN101202467B (en) * 2007-07-23 2010-06-30 刘岩 Low-voltage control circuit power supply source switching device
JP2010526523A (en) * 2007-05-03 2010-07-29 ピラー グループ ゲーエムベーハー Method for controlling backup power supply connected in parallel and apparatus comprising backup power supply connected in parallel
CN103715759A (en) * 2013-12-25 2014-04-09 施耐德万高（天津）电气设备有限公司 Power selection and interlocking device of automatic change-over switch appliance used in 690V IT system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100373744C (en) * 2003-03-24 2008-03-05 新昌机械设备株式会社 Unit resident normal/ emergency power supply switch board and its power supply automatic converting device
CN100358064C (en) * 2005-06-29 2007-12-26 天津市百利电气有限公司 Quick automatic change-over switch
JP2010526523A (en) * 2007-05-03 2010-07-29 ピラー グループ ゲーエムベーハー Method for controlling backup power supply connected in parallel and apparatus comprising backup power supply connected in parallel
CN101682214B (en) * 2007-05-03 2012-05-30 皮勒集团有限公司 Method for controlling backup power sources connected in parallel and device comprising backup power sources connected in parallel
CN101202467B (en) * 2007-07-23 2010-06-30 刘岩 Low-voltage control circuit power supply source switching device
CN103715759A (en) * 2013-12-25 2014-04-09 施耐德万高（天津）电气设备有限公司 Power selection and interlocking device of automatic change-over switch appliance used in 690V IT system

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee